Table 4. Effects of different silicon (Si) treatments on Si concentrations in rice organs (SiO₂%).

Fertilizer	Rate	Leaf	Stem	Grain
Control	Si0	11.1±0.31 c	5.17±0.42 d	0.19±0.031 c
Q	Si1	12.3±0.36 b	5.57±0.47 cd	0.22±0.04 bc
	Si2	12.3±0.35 b	5.34±0.27 cd	0.23±0.04 bc
	Si3	12.1±0.31 b	5.76±0.14 c	0.27±0.02 ab
H	Si1	11.9±0.22 b	5.54±0.30 cd	0.21±0.03 c
	Si2	12.6±0.13 ab	6.31±0.39 b	0.26±0.02 ab
	Si3	12.9±0.27 a	6.87±0.37 a	0.28±0.04 a

Si₀: no Si fertilizer; Si₁: slag fertilizer applied at a rate of 187 mg plant-available Si per kg soil; Si₂: slag fertilizer applied at a rate of 560 mg plant-available Si per kg soil; Si₃: slag fertilizer applied at a rate of 935 mg plant-available Si per kg soil; H: slag fertilizer H, Q: slag fertilizer Q; Data are means ± SD of three replicates; mean values followed by different letters (a, b, c) are significantly different (P≤0.05).